What is average atomic mass of chlorine if its two isotopes Cl ³⁵ and Cl ³⁷ exists in relative abundance of 75 % and 25 % respectively ?

Step-by-step solution

Average atomic mass is calculated using the formula: Average atomic mass = m₁ p₁ + m₂ p₂ 100 where m₁ and m₂ are the atomic masses of the isotopes, and p₁ and p₂ are their respective percentage abundances. Substituting the given values: Average atomic mass = 35 75 + 37 25 100 Average atomic mass = 2625 + 925 100 Average atomic mass = 3550 100 = 35.5 Answer: 35.5